Hengda Industrial and Trade Co., Limited is professional company in producing and selling of various valves,seamless steel gas cylinder, acetylene cylinder, LPG Cylinder for home using and other cylinders. We have exported our products to all over the world and the main market is Middle East, Europe, Africa, South America and Southeast Esia. Our products have been evaluated byGB5099, GB11638, ISO9809, EN1964, ISO11439 certification issued by BV and SGS. We have gained trust and good reputation from our old and new customers. Please feel free to contact us for further information, we will be always at your service.